Delta Ultron DPM Series, Руководство пользователя, Страница: 53 / 264

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3 Operation Modes
3.2.2 Battery Mode_ Dual Input_ Single Unit
The UPS transfers to Battery mode automatically if the main AC source is abnormal, for
example, when unstable voltage or a power outage occurs. In Battery mode, the batteries
provide DC power and the UPS converts it into AC power and supplies it to the connected
critical loads via the external maintenance bypass cabinet’s Output Breaker (Q4). During
the conversion process, output voltage remains the same. Please see
Figure 3-14 for
Battery mode diagram. During Battery mode, the UPS’s tri-color LED illuminates yellow and
the text '
DC ' appears in the lower right corner of the screen.
BYPA.
Q2
MAIN LOAD
Power Module 1
Power Module 2
Power Module...
Q1
Inverter
Converter
Rectifier
Static Switch
Static Switch
Q5
(OFF)
(ON)
Q3
Q4
(Figure 3-14: Battery Mode Diagram_ Dual Input Single Unit)